Explanation

This is a union of several computers, privately or within a company, which is limited to short distances, thus on a building or on an enterprise location, but not through the number of computers in it. LANs usually are used for several computers to share a printer, a fax or even a software. A WAN (Wide Area network) or a MAN (Metropolitan Area Network) is a network which is larger than a LAN and is not spatially limited.